Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants
Abstract Bi4Ti3O12 is an important lead-free ferroelectric material. Doping modification of Bi4Ti3O12 has attracted great attention to improving its performances. In this work, the effect of Sr dopants on the microstructure, dielectric, and conductivity of Bi4Ti3O12 ceramic was investigated by XRD,...
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Tsinghua University Press
2018-10-01
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Series: | Journal of Advanced Ceramics |
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Online Access: | http://link.springer.com/article/10.1007/s40145-018-0277-1 |
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author | Lin Wang Mengqi Gui Hai-Bo Jin Xinyuan Hu Yongjie Zhao Naseer Muhammad Adnan Jing-Bo Li |
author_facet | Lin Wang Mengqi Gui Hai-Bo Jin Xinyuan Hu Yongjie Zhao Naseer Muhammad Adnan Jing-Bo Li |
author_sort | Lin Wang |
collection | DOAJ |
description | Abstract Bi4Ti3O12 is an important lead-free ferroelectric material. Doping modification of Bi4Ti3O12 has attracted great attention to improving its performances. In this work, the effect of Sr dopants on the microstructure, dielectric, and conductivity of Bi4Ti3O12 ceramic was investigated by XRD, SEM, and AC impedance spectroscopy. Substitution of 1 at% Sr for Bi decreased the grain size, suppressed the dielectric dispersion of Bi4Ti3O12 ceramic at room temperature, and resulted in different effects on the conductivity of grains and grain boundaries. The conductivity of grains in Bi4Ti3O12 ceramic was increased by the small amount of Sr dopants in the whole experimental temperature range. While the grain boundaries of 1 at% Sr-doped Bi4Ti3O12 exhibited lower conductivity than pure Bi4Ti3O12 below ~380 °C and higher conductivity above ~380 °C. The experimental phenomena were interpreted in term of compensating defects for Sr dopants. |
first_indexed | 2024-03-12T10:38:20Z |
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issn | 2226-4108 2227-8508 |
language | English |
last_indexed | 2024-03-12T10:38:20Z |
publishDate | 2018-10-01 |
publisher | Tsinghua University Press |
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series | Journal of Advanced Ceramics |
spelling | doaj.art-259a1a079ec5430fac1d7e3cdc93a6982023-09-02T08:27:42ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082018-10-017325626510.1007/s40145-018-0277-1Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopantsLin Wang0Mengqi Gui1Hai-Bo Jin2Xinyuan Hu3Yongjie Zhao4Naseer Muhammad Adnan5Jing-Bo Li6Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyAbstract Bi4Ti3O12 is an important lead-free ferroelectric material. Doping modification of Bi4Ti3O12 has attracted great attention to improving its performances. In this work, the effect of Sr dopants on the microstructure, dielectric, and conductivity of Bi4Ti3O12 ceramic was investigated by XRD, SEM, and AC impedance spectroscopy. Substitution of 1 at% Sr for Bi decreased the grain size, suppressed the dielectric dispersion of Bi4Ti3O12 ceramic at room temperature, and resulted in different effects on the conductivity of grains and grain boundaries. The conductivity of grains in Bi4Ti3O12 ceramic was increased by the small amount of Sr dopants in the whole experimental temperature range. While the grain boundaries of 1 at% Sr-doped Bi4Ti3O12 exhibited lower conductivity than pure Bi4Ti3O12 below ~380 °C and higher conductivity above ~380 °C. The experimental phenomena were interpreted in term of compensating defects for Sr dopants.http://link.springer.com/article/10.1007/s40145-018-0277-1dielectricimpedance analysiselectrical propertiesdefectsAurivillius compound |
spellingShingle | Lin Wang Mengqi Gui Hai-Bo Jin Xinyuan Hu Yongjie Zhao Naseer Muhammad Adnan Jing-Bo Li Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants Journal of Advanced Ceramics dielectric impedance analysis electrical properties defects Aurivillius compound |
title | Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants |
title_full | Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants |
title_fullStr | Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants |
title_full_unstemmed | Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants |
title_short | Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants |
title_sort | temperature dependent conductivity of bi4ti3o12 ceramics induced by sr dopants |
topic | dielectric impedance analysis electrical properties defects Aurivillius compound |
url | http://link.springer.com/article/10.1007/s40145-018-0277-1 |
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